Photographic-printing machine.



J. A. CHADDERTON.

PHOTOGRAPHIC PRINTING MACHINE- APPLICATION FILED JUNE 3,1916.

Patented July 3, 1917.

2 SHEETS-SHEET I- awn/WM MWaddaiae I. A. CHADDERTON.

PHOIOGRAPHIC PRINTING MACHINE.

APPLICATION FILED JUNE 3, I915.

UNITED STATES PATENT OFFICE.

JAMES A. GHADDERTON, 0F SCOTTDALE, PENNSYLVANIA.

To all whom it may concern:

Be it known that I, JAMES A. OHADDER- TON, a citizen of the UnitedStates, residing at Scottdale, in the county of Westmoreland and Stateof Pennsylvania, have invented certain new and useful Improvements inPhotographic-Printing Machines, of which the following is aspecification.

The present invention relates to photography and more particularly tonew and useful improvements in photographic printing machines.

An object of my invention is to provide a photographic printing machinehaving means for receiving the negative and sensitized paper, means forretaining the same in proper correlation for a printing operation, andautomatic means associated therewith for supplying suitable light forthe printing process. Another object of my invention is to provide in aprinting machine of the class described a combination for holding the'film and a piece of sensitized. paper in proper correlation and meansfor supplying suitable printing light for a printing operation, the lastsaid means bein also arranged to supply a suitable modi ed light such asa red light, to enable the operator to properly place the sensitizedpaper and film in the machine.

A further object of my invention is to provide a film printing machineof the class described which may be operated by hand or foot as desired.

Other objects and advantages to be derived from the use of my improvedprinting machine will appear from the following detail description andthe claims, taken with an inspection of the accompanying drawing, inwhich:

Figure 1 is a perspective view of a photo graphic printing machineembodying the improvements of my invention,

Fig. 2 is a vertical sectional view taken through the same, showing themachine during a printing operation,

Fig. 3 is a disamembled perspective view of the film retaining member.

Fig. 4 is a perspective view of the preferred form of frame forreceiving the film and sensitized paper, said frame being shown in openposition; and

Fig. 5 is a diagrammatic view of the electrical circuits associated withmy improved printing machine.

Specification of Letters Patent.

Application filed June 3,1916. Serial No. 101,567.

PHOTOGRAPI-IIC-PRINTING MACHINE.

Patented July 3, 191 '7.

Referring more particularly to the drawlng, wherein similar characters.of reference designate like and corresponding parts throughout thevarious views, 1 designates the main body of my improved printingmachine, the same being in the form of a rectangular table. The table 1is provided with supporting legs 2 strengthened by means of vertical andtransverse braces 3 and 4. .The legs 2 are strengthened at their uncturewith the top 1 by means of end and side boards 5 and 6. A base board 7connected to the rearward legs of the machines and strengthens the sameat this point, said base board serving a further purpose which Wlllhereinafter appear. A rack 8 is mounted at the rear of the body 1 forsupporting diiferent sized printing frames when not in use.

The printing mechanism of my invention comprises a lamp housing 9mounted beneath an opening 10 formed in the body 1, said housing havinga bottom 11 upon which are arranged a plurality of sets of light sources12 and 13 alternately operable and of different shades for a purposewhich Will hereinafter appear. The light sources 12 and 13 areintermittently and alternately controlled by means of a suitable switchmechanism the preferred form of which'is hereinafter described indetail.

The film holding means of my invention preferably comprises a removableframe 14 provided with a tongue 15 receivable in a suitable recess 16formed in the top 1, said frame 14 being secured in position by means ofa slidin spring pressed bolt or looking member 17 Test shown in Fig. 2.The member 17 is provided with a downwardly extending finger engagingportion 17. The frame 14 is provided with a rectangular recess 18 and ashoulder 19 on which is mounted a transparent plate 20 on which isdeposited the film and paper holding frame taining frame ,24 hinged at25 on the base fram21 is adapted to be swung down onto the shoulder 22,said frame 24 having an internal inwardly bent flange for engagementwith the film, securely grippin -the same adjacent the shoulder 23. Therame 21 is placed within the frame 14 with the supplemental frameuppermost and with the film lowermost so as to reproduce the,

image contained thereonon the sensitized paper, the latter being placedabove the frame 24. ordinary wing nut orlatch 27 carried by the frame 14serves to retain the frame- 21 within said frame 14, also maintainingthe Supplemental 'frame 24 in closed position. a

I provide means for maintaining the film and sensitized papers insnugengagement with the transparent plate 20, said means comprising a padholder 28 hinged at 29 to a block 30 mounted on the top -1. I provide apad 31 carried. by the pad holder 28, said pad holder comprising a block32 having screws 33 extending from the rearward face thereof. The block32 is covered with felt or some similar soft material. The block 32 isengageable with the pad carrying member 28 by means of an elongatedaperture 34 formed in said pad carrying member and having enlargedportions 35 and 36 to receiveithe screw heads 33, slight longitudinalmovementof the pad engaging the screw head with the narrow portions ofthe flap 34 and firmly connect the pad to the holder. It will be readilyapparent that various sized pads may be applied to the pad holder,depending upon the sizes 'of printing frame employed.

The pad holder 28 is normally maintained in the position shown in Fig. 1by means of a coil spring 37 connected at the point 38 to the pad holderand to the block. I provide means for depressing the pad holder intoengagement as a film retaining device, said means comprising an arm 39hinged at 40 to a housing 41 carried by the rearward margin of thetop 1. A coil spring 42 connected with the housing and with said arm 39normally maintaining the'arm in the position shown in Flg. 1; Ananti-friction roller 43 carried by the free end of the arm 39 engagesthe rear face of the pad holder 28 permitting relative movement betweensaid pad holder and said arm. I provide means for moving the arm 39 toactuate the pad holder, said means including a connecting rod 44 havinga flattened portion 45 pivoted at 46 to an enlargement 47 formed on saidarm 39. A foot pedal 48 hingedly mounted at 49 to the base board 7 isengaged with the connecting rod 44 by means of a wing nut 50 carried bythe lower end of said rod. A coil spring 51 having its free endsfastened at 52 to a vertical panel 53 and to said foot pedal 48 servesto retain the foot pedal to uppermost position under a depression.

It will be readily apparent that during a printing operation it isessential that a strong well distributed light be used and that, whileplacing the film and sensitized paper in position-to be printedsufiicient light must be had to enable the operator to clearly see whathe is doing. Therefore, two light sources are provided in mly improvedprinting machine, said light sources being intermittently andalternately supplied with electric current by means of-a switchmechanism operated upon a depression and a return, respectively, of thepad holder 28.

This switch mechanism is mounted on the rear wall 54 of the housing 41,said rear Wall being secured in position by means of screws 55 or thelike. The switch mechanism comprises two circuit closing memberssemi-diagrammatically illustrated in Fig. 5, and

comprise base portions 56 and 57 mounted on the rear wall 54 in anysuitable manner. Referring to the circuit closing member 56 I provideaterminal 58 extending outwardly from the base 56 and having an inwardly.turned portion 59'normally engaged by a controllable by the switch 57and arranged in sets, said switch having a terminal 61 engageable attimes by a spring arm 62 forming the other terminal of the white lightcircuits. Manually controllable switches S and S are interposed in thewhite light circuits, for cutting either or both out 'when the filmrequires more light on one side than on the other.

. I provide actuating means'for the spring arms 60 and 62, said meansincluding a pair of reciprocally mounted pins 63 and 64 provided withinsulated tips 65 for normal engagement with said spring arms. Theopposite ends of the pins normally project through the block 30 beyondthe free marginal edge thereof to be engaged when the pad holder 28 isin the position shown in Fig- 2 by metallic wear plates 66 ,carried bysaid pad holder.

In operation, the sensitized paper and film are placed in the frame 21in the manner hereinbefore set forth, said frame being placed inposition on the frame 14, said frame 14 having been previously placed inposition in the opening 10. The proper sized pad is now placed on thepad holder and the foot pedal 48 depressed this movement brings the padholder into a horizontal plane at the same time bringing the pad intoengagement with the film' and sensitized paper. .At this time the pins63 and 64 are moved rearwardly opening the switch 56 and closing theswitch 57. This movement lights the white light 12 and cuts out the theswitch 57. The lights now return to their former condition, namely, thered lamp lighting, and the white light being extinguished. It will bereadily apparent that various sized photographs may be printed in myimproved printing machine, by virtue of the provision of the removableframe 1a which may be supplemented by the proper sized frame as desired.

From the above description taken in connection with the accompanyingdrawings, it is thought that a clear and comprehensive understanding ofthe construction, operation and advantages of my invention may be had,and While I have shown and described my invention as embodying aspecific structure, I desire that it be understood that I may make suchchanges on said structure as do not depart from the spirit and scope ofthe invention as claimed.

What I claim as new and desire to secure by Letters Patent is:

1. In a photographic printing machine of the class described, a basemember, printing frames detachably associated with said base, and witheach other, one of said frames receiving photographic sensitized paperand a film, a plurality of light sources adjacent thereto, means forretaining the film and sensitized paper in position to be printed andmeans for alternately controlling said light sources.

2. In a photographic printing nr'achine of the class described, a basemember, printing frames associated with said base member, one of saidframes being adapted to receive a film and a piece of sensitized paper,means for retaining said film and sensitized paper in position to beprinted, a plurality of light sources, one of said light sources servingto print a picture on the sensitized paper, the other light source beingsubdued and for the use of the operator, and circuit closing meansassociated with said film retaining means for automatically energizingalternately said light sources.

3. In a photographic printing machine of the class described, thecombination of a base and supporting legs therefor, of a lamp casingcarried by said base, a main printing frame carried by said base oversaid lamp casing, detachably associated frames carried by said mainframe for holding a film and a piece of sensitized paper, a plurality oflight sources in said lamp casing alternately operable, means forretaining said film and paper in position, said means comprising ahingedly mounted member and a pad carried thereby, means for depressingsaid member into operative position, and means operable by said memberfor alternately operating said light sources.

4. In a photographic printing machine of the class described, a base, alamp casing associated with said base, a main frame mounted above saidlamp casing, a detachable supplemental frame associated with said mainframe for containing a film and sensitized paper to be printed thereby,means for retaining said film and paper in position, said meanscomprising a hingedly mounted member and a pad detachably carriedthereby, actuating means for said member, a plurality of light sourcesin said lamp casing, and a plurality of swltch elements actuatable bysaid member to open and close circuits for said light sources whereby toalternately energize the same.

In testimony whereof I affix my signature hereto.

JAMES A. CHADDERTON.

